<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <script>
        function  copyObj ( arg ) {
            var newArg = Array.isArray(arg)?[]:{} ; 
            for ( var i in arg ) {
                if ( Array.isArray(arg) ) {
                    
                }
            }
        }
    </script>
</body>
</html>